Q: icloud have been hack

You are not speaking with Apple here.  This is a user to user forum.

If you are unable to reset your password via the following article, you will need to: Contact Apple for help with Apple ID account security - Apple Support

Apple ID: Changing your password - Apple Support

No, it wasn't hacked. It might be that the email address is different from what you used. But i have seen a problem like that before. If you still couldnt find any help. Get back to me and lets go through it together. Its not a major problem so don't panic.